Standardized Enthalpies and Entropies

Standardized enthalpies and entropies for some common substances

Sponsored Links

Standardized enthalpies and entropies of some common substances:

Substance	Entropy - s -		Enthalpy - h -
Substance	Btu/lbmole R	J/gmole K	Btu/lbmole	J/gmole
Acetylene C₂H₂	47.97	200.82	97,495	226,757
Benzene C₆H₆	64.3	269.21	35,653	82,923
n-Butane C₄H₁₀	74.1	310.03	-53,627	-124,727
Carbon Dioxide CO₂	51.03	213.66	-169,183	-393,492
Carbon Monoxide CO	47.3	197.92	-47,517	-110,516
Ethane C₂H₆	54.8	229.48	-36,401	-84,662
Hydrogen H₂	31.2	130.60	0	0
Methane CH₄	44.5	186.19	-32,179	-74,843
Nitrogen N₂	45.8	191.56	0	0
Oxygen O₂	48.99	205.09	0	0
Propane C₃H₈	64.47	269.92	-44,647	-103,848
Water H₂O	16.72	70.00	-122,976	-286,022

equilibrium states at 25^oC (77^oF) and 1 atm

Go to Standard state and Standard enthalpy of formation for listing of standard enthalpy of formation and standard entrypy for more than 370 inorganic substances.

Related Documents

1st Law of Thermodynamics - The First Law of Thermodynamics simply states that energy can be neither created nor destroyed (conservation of energy). Thus power generation processes and energy sources actually involve conversion of energy from one form to another, rather than creation of energy from nothing
2nd Law of Thermodynamics - Entropy and disorder
Ammonia - NH₃ - Thermodynamic Properties - Thermodynamic properties of saturated and superheated ammonia R-717 - specific volume, enthalpy and entropy
Entropy of Superheated Steam - Entropy of steam superheated to temperatures above saturation point
Heat, Work and Energy - Heat, work and energy tutorial - essentials as specific heat
Standard state and enthalpy of formation, Gibbs free energy of formation, entropy and heat capacity - Definition and explanation of the terms standard state and standard enthalpy of formation, with listing of values for standard enthalpy and Gibbs free energy of formation, as well as standard entropy and molar heat capacity, of 370 inorganic compounds
Steam and Vapor Enthalpy - Introduction and definition of vapor and steam enthalpy - specific enthalpy of saturated liquid, saturated vapor and superheated vapor
Steam Entropy - Basic steam thermodynamics and the entropy diagram
Thermodynamics key values internationally agreed - Internationally agreed, internally consistent, values for the thermodynamic properties (standard enthalpy of formation, entropy and [H°(298)-H°(0)]) of key chemical substances
Third Law of Thermodynamics - The entropy of a substance is zero if the absolute temperature is zero
Units of Heat - BTU, Calorie and Joule - The most common units of heat are BTU - British Thermal Unit, Calorie and Joule
Water - Thermophysical Properties - Thermal properties of water - density, freezing temperature, boiling temperature, latent heat of melting, latent heat of evaporation, critical temperature and more

Tag Search

en: enthalpy entropy acetylene benzene butane carbon

Standardized Enthalpies and Entropies

Standardized enthalpies and entropies for some common substances

Related Topics

Related Documents

Tag Search

Search the Engineering ToolBox

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

Privacy

Advertise in the ToolBox

Citation

Scientific Online Calculator